From patchwork Wed Feb 5 00:00:30 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pradeep Kumar Chitrapu X-Patchwork-Id: 11365527 X-Patchwork-Delegate: kvalo@adurom.com Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 1566014B4 for ; Wed, 5 Feb 2020 00:00:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D2FD9214AF for ; Wed, 5 Feb 2020 00:00:41 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="key not found in DNS" (0-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="uTCUVa+a" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727647AbgBEAAl (ORCPT ); Tue, 4 Feb 2020 19:00:41 -0500 Received: from mail26.static.mailgun.info ([104.130.122.26]:56347 "EHLO mail26.static.mailgun.info" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727483AbgBEAAk (ORCPT ); Tue, 4 Feb 2020 19:00:40 -0500 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1580860839; h=References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=z8A6h18v+UmRaKE2scC/ngpD1OoHxA8BZhH78vwFKRo=; b=uTCUVa+aJ5lXmRpR7tqCca6B911P0I5s4hWv6l0o4VXTqzmbXJwIlk+V5wTMZpN0OaaKkNZe WZb5I84WmQpBkPdQNdAB/nyDKM8HjMs06uPJD4MPpN+SI1S5SMl/ntjq6uB/5TVA2/2nYCpQ J3UQS2qFdkHYBL+tJo8V6oShryY= X-Mailgun-Sending-Ip: 104.130.122.26 X-Mailgun-Sid: WyI3YTAwOSIsICJsaW51eC13aXJlbGVzc0B2Z2VyLmtlcm5lbC5vcmciLCAiYmU5ZTRhIl0= Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by mxa.mailgun.org with ESMTP id 5e3a05a6.7fa688c2bce0-smtp-out-n01; Wed, 05 Feb 2020 00:00:38 -0000 (UTC) Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 73A12C4479C; Wed, 5 Feb 2020 00:00:37 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-caf-mail-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=2.0 tests=ALL_TRUSTED,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.0 Received: from pradeepc-linux.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: pradeepc) by smtp.codeaurora.org (Postfix) with ESMTPSA id 16D3FC433A2; Wed, 5 Feb 2020 00:00:35 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 16D3FC433A2 Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=none smtp.mailfrom=pradeepc@codeaurora.org From: Pradeep Kumar Chitrapu To: ath11k@lists.infradead.org Cc: linux-wireless@vger.kernel.org, Pradeep Kumar Chitrapu Subject: [PATCH 2/2] ath11k: add thermal sensor device support Date: Wed, 5 Feb 2020 05:30:30 +0530 Message-Id: <1580860830-12696-2-git-send-email-pradeepc@codeaurora.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1580860830-12696-1-git-send-email-pradeepc@codeaurora.org> References: <1580860830-12696-1-git-send-email-pradeepc@codeaurora.org> Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org Temperature sensor generates electrical analog voltage from temperature of each chain. The analog voltage is converted to digital value through ADC. For reading temperature values fom user space, hw monitoring device is used. Whenever the user requests for current temperature, the driver sends WMI command and wait for response. For reading temperature, cat /sys/class/ieee80211/phy*/device/hwmon/hwmon2/temp1_input Signed-off-by: Pradeep Kumar Chitrapu --- drivers/net/wireless/ath/ath11k/core.c | 1 + drivers/net/wireless/ath/ath11k/mac.c | 2 + drivers/net/wireless/ath/ath11k/thermal.c | 79 ++++++++++++++++++++++++++++ drivers/net/wireless/ath/ath11k/thermal.h | 13 +++++ drivers/net/wireless/ath/ath11k/wmi.c | 85 +++++++++++++++++++++++++++++++ drivers/net/wireless/ath/ath11k/wmi.h | 13 +++++ 6 files changed, 193 insertions(+) diff --git a/drivers/net/wireless/ath/ath11k/core.c b/drivers/net/wireless/ath/ath11k/core.c index 63b0864c6bcb..d9849bc6033d 100644 --- a/drivers/net/wireless/ath/ath11k/core.c +++ b/drivers/net/wireless/ath/ath11k/core.c @@ -654,6 +654,7 @@ static void ath11k_core_restart(struct work_struct *work) complete(&ar->install_key_done); complete(&ar->vdev_setup_done); complete(&ar->bss_survey_done); + complete(&ar->thermal.wmi_sync); wake_up(&ar->dp.tx_empty_waitq); idr_for_each(&ar->txmgmt_idr, diff --git a/drivers/net/wireless/ath/ath11k/mac.c b/drivers/net/wireless/ath/ath11k/mac.c index 6640662f5ede..90d4ebe6be89 100644 --- a/drivers/net/wireless/ath/ath11k/mac.c +++ b/drivers/net/wireless/ath/ath11k/mac.c @@ -5873,6 +5873,8 @@ int ath11k_mac_allocate(struct ath11k_base *ab) init_completion(&ar->bss_survey_done); init_completion(&ar->scan.started); init_completion(&ar->scan.completed); + init_completion(&ar->thermal.wmi_sync); + INIT_DELAYED_WORK(&ar->scan.timeout, ath11k_scan_timeout_work); INIT_WORK(&ar->regd_update_work, ath11k_regd_update_work); diff --git a/drivers/net/wireless/ath/ath11k/thermal.c b/drivers/net/wireless/ath/ath11k/thermal.c index 6c2d96be34cb..259dddbda2c7 100644 --- a/drivers/net/wireless/ath/ath11k/thermal.c +++ b/drivers/net/wireless/ath/ath11k/thermal.c @@ -6,6 +6,8 @@ #include #include #include +#include +#include #include "core.h" #include "debug.h" @@ -57,6 +59,70 @@ .set_cur_state = ath11k_thermal_set_cur_throttle_state, }; +static ssize_t ath11k_thermal_show_temp(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct ath11k *ar = dev_get_drvdata(dev); + int ret, temperature; + unsigned long time_left; + + mutex_lock(&ar->conf_mutex); + + /* Can't get temperature when the card is off */ + if (ar->state != ATH11K_STATE_ON) { + ret = -ENETDOWN; + goto out; + } + + reinit_completion(&ar->thermal.wmi_sync); + ret = ath11k_wmi_send_pdev_temperature_cmd(ar); + if (ret) { + ath11k_warn(ar->ab, "failed to read temperature %d\n", ret); + goto out; + } + + if (test_bit(ATH11K_FLAG_CRASH_FLUSH, &ar->ab->dev_flags)) { + ret = -ESHUTDOWN; + goto out; + } + + time_left = wait_for_completion_timeout(&ar->thermal.wmi_sync, + ATH11K_THERMAL_SYNC_TIMEOUT_HZ); + if (!time_left) { + ath11k_warn(ar->ab, "failed to synchronize thermal read\n"); + ret = -ETIMEDOUT; + goto out; + } + + spin_lock_bh(&ar->data_lock); + temperature = ar->thermal.temperature; + spin_unlock_bh(&ar->data_lock); + + /* display in millidegree celcius */ + ret = snprintf(buf, PAGE_SIZE, "%d\n", temperature * 1000); +out: + mutex_unlock(&ar->conf_mutex); + return ret; +} + +void ath11k_thermal_event_temperature(struct ath11k *ar, int temperature) +{ + spin_lock_bh(&ar->data_lock); + ar->thermal.temperature = temperature; + spin_unlock_bh(&ar->data_lock); + complete(&ar->thermal.wmi_sync); +} + +static SENSOR_DEVICE_ATTR(temp1_input, 0444, ath11k_thermal_show_temp, + NULL, 0); + +static struct attribute *ath11k_hwmon_attrs[] = { + &sensor_dev_attr_temp1_input.dev_attr.attr, + NULL, +}; +ATTRIBUTE_GROUPS(ath11k_hwmon); + int ath11k_thermal_set_throttling(struct ath11k *ar, u32 throttle_state) { struct ath11k_base *sc = ar->ab; @@ -91,6 +157,7 @@ int ath11k_thermal_set_throttling(struct ath11k *ar, u32 throttle_state) int ath11k_thermal_register(struct ath11k_base *sc) { struct thermal_cooling_device *cdev; + struct device *hwmon_dev; struct ath11k *ar; struct ath11k_pdev *pdev; int i, ret; @@ -118,6 +185,18 @@ int ath11k_thermal_register(struct ath11k_base *sc) } ar->thermal.cdev = cdev; + if (!IS_REACHABLE(CONFIG_HWMON)) + return 0; + + hwmon_dev = devm_hwmon_device_register_with_groups(&ar->hw->wiphy->dev, + "ath11k_hwmon", ar, + ath11k_hwmon_groups); + if (IS_ERR(hwmon_dev)) { + ath11k_err(ar->ab, "failed to register hwmon device: %ld\n", + PTR_ERR(hwmon_dev)); + ret = -EINVAL; + goto err_thermal_destroy; + } } return 0; diff --git a/drivers/net/wireless/ath/ath11k/thermal.h b/drivers/net/wireless/ath/ath11k/thermal.h index 7aa8dcfdb624..510c5aaebefa 100644 --- a/drivers/net/wireless/ath/ath11k/thermal.h +++ b/drivers/net/wireless/ath/ath11k/thermal.h @@ -10,18 +10,26 @@ #define ATH11K_THERMAL_TEMP_HIGH_MARK 150 #define ATH11K_THERMAL_THROTTLE_MAX 100 #define ATH11K_THERMAL_DEFAULT_DUTY_CYCLE 100 +#define ATH11K_HWMON_NAME_LEN 15 +#define ATH11K_THERMAL_SYNC_TIMEOUT_HZ (5 * HZ) struct ath11k_thermal { struct thermal_cooling_device *cdev; + struct completion wmi_sync; /* protected by conf_mutex */ u32 throttle_state; + /* temperature value in Celcius degree + * protected by data_lock + */ + int temperature; }; #if IS_REACHABLE(CONFIG_THERMAL) int ath11k_thermal_register(struct ath11k_base *sc); void ath11k_thermal_unregister(struct ath11k_base *sc); int ath11k_thermal_set_throttling(struct ath11k *ar, u32 throttle_state); +void ath11k_thermal_event_temperature(struct ath11k *ar, int temperature); #else static inline int ath11k_thermal_register(struct ath11k_base *sc) { @@ -36,5 +44,10 @@ static inline int ath11k_thermal_set_throttling(struct ath11k *ar, u32 throttle_ { } +static inline void ath11k_thermal_event_temperature(struct ath11k *ar, + int temperature) +{ +} + #endif #endif /* _ATH11K_THERMAL_ */ diff --git a/drivers/net/wireless/ath/ath11k/wmi.c b/drivers/net/wireless/ath/ath11k/wmi.c index 425c9fdee71d..ca63ce07f12d 100644 --- a/drivers/net/wireless/ath/ath11k/wmi.c +++ b/drivers/net/wireless/ath/ath11k/wmi.c @@ -1471,6 +1471,34 @@ int ath11k_wmi_send_stats_request_cmd(struct ath11k *ar, return ret; } +int ath11k_wmi_send_pdev_temperature_cmd(struct ath11k *ar) +{ + struct ath11k_pdev_wmi *wmi = ar->wmi; + struct wmi_get_pdev_temperature_cmd *cmd; + struct sk_buff *skb; + int ret; + + skb = ath11k_wmi_alloc_skb(wmi->wmi_ab, sizeof(*cmd)); + if (!skb) + return -ENOMEM; + + cmd = (struct wmi_get_pdev_temperature_cmd *)skb->data; + cmd->tlv_header = FIELD_PREP(WMI_TLV_TAG, WMI_TAG_PDEV_GET_TEMPERATURE_CMD) | + FIELD_PREP(WMI_TLV_LEN, sizeof(*cmd) - TLV_HDR_SIZE); + cmd->pdev_id = ar->pdev->pdev_id; + + ret = ath11k_wmi_cmd_send(wmi, skb, WMI_PDEV_GET_TEMPERATURE_CMDID); + if (ret) { + ath11k_warn(ar->ab, "failed to send WMI_PDEV_GET_TEMPERATURE cmd\n"); + dev_kfree_skb(skb); + } + + ath11k_dbg(ar->ab, ATH11K_DBG_WMI, + "WMI pdev get temperature for pdev_id %d\n", ar->pdev->pdev_id); + + return ret; +} + int ath11k_wmi_send_bcn_offload_control_cmd(struct ath11k *ar, u32 vdev_id, u32 bcn_ctrl_op) { @@ -4232,6 +4260,35 @@ int ath11k_wmi_pull_fw_stats(struct ath11k_base *ab, struct sk_buff *skb, return 0; } +static int +ath11k_pull_pdev_temp_ev(struct ath11k_base *ab, u8 *evt_buf, + u32 len, s32 *temp, u32 *pdev_id) +{ + const void **tb; + const struct wmi_pdev_temperature_event *ev; + int ret; + + tb = ath11k_wmi_tlv_parse_alloc(ab, evt_buf, len, GFP_ATOMIC); + if (IS_ERR(tb)) { + ret = PTR_ERR(tb); + ath11k_warn(ab, "failed to parse tlv: %d\n", ret); + return ret; + } + + ev = tb[WMI_TAG_PDEV_TEMPERATURE_EVENT]; + if (!ev) { + ath11k_warn(ab, "failed to fetch pdev temp ev"); + kfree(tb); + return -EPROTO; + } + + *pdev_id = ev->pdev_id; + *temp = ev->temperature; + + kfree(tb); + return 0; +} + size_t ath11k_wmi_fw_stats_num_vdevs(struct list_head *head) { struct ath11k_fw_stats_vdev *i; @@ -5575,6 +5632,31 @@ static void ath11k_pdev_ctl_failsafe_check_event(struct ath11k_base *ab, kfree(tb); } +static void +ath11k_wmi_pdev_temperature_event(struct ath11k_base *ab, + struct sk_buff *skb) +{ + struct ath11k *ar; + s32 temp; + u32 pdev_id; + + if (ath11k_pull_pdev_temp_ev(ab, skb->data, skb->len, &temp, &pdev_id) != 0) { + ath11k_warn(ab, "failed to extract pdev temperature event"); + return; + } + + ath11k_dbg(ab, ATH11K_DBG_WMI, + "pdev temperature ev temp %d pdev_id %d\n", temp, pdev_id); + + ar = ath11k_mac_get_ar_by_pdev_id(ab, pdev_id); + if (!ar) { + ath11k_warn(ab, "invalid pdev id in pdev temperature ev %d", pdev_id); + return; + } + + ath11k_thermal_event_temperature(ar, temp); +} + static void ath11k_wmi_tlv_op_rx(struct ath11k_base *ab, struct sk_buff *skb) { struct wmi_cmd_hdr *cmd_hdr; @@ -5652,6 +5734,9 @@ static void ath11k_wmi_tlv_op_rx(struct ath11k_base *ab, struct sk_buff *skb) case WMI_PDEV_CSA_SWITCH_COUNT_STATUS_EVENTID: ath11k_wmi_pdev_csa_switch_count_status_event(ab, skb); break; + case WMI_PDEV_TEMPERATURE_EVENTID: + ath11k_wmi_pdev_temperature_event(ab, skb); + break; /* add Unsupported events here */ case WMI_TBTTOFFSET_EXT_UPDATE_EVENTID: case WMI_VDEV_DELETE_RESP_EVENTID: diff --git a/drivers/net/wireless/ath/ath11k/wmi.h b/drivers/net/wireless/ath/ath11k/wmi.h index c8aa4cbb9a49..5192dda614d1 100644 --- a/drivers/net/wireless/ath/ath11k/wmi.h +++ b/drivers/net/wireless/ath/ath11k/wmi.h @@ -3304,6 +3304,12 @@ struct wmi_request_stats_cmd { u32 pdev_id; } __packed; +struct wmi_get_pdev_temperature_cmd { + u32 tlv_header; + u32 param; + u32 pdev_id; +} __packed; + #define WMI_BEACON_TX_BUFFER_SIZE 512 struct wmi_bcn_tmpl_cmd { @@ -4132,6 +4138,12 @@ struct wmi_pdev_radar_ev { s32 sidx; } __packed; +struct wmi_pdev_temperature_event { + /* temperature value in Celcius degree */ + s32 temperature; + u32 pdev_id; +} __packed; + #define WMI_RX_STATUS_OK 0x00 #define WMI_RX_STATUS_ERR_CRC 0x01 #define WMI_RX_STATUS_ERR_DECRYPT 0x08 @@ -4763,6 +4775,7 @@ int ath11k_wmi_pdev_bss_chan_info_request(struct ath11k *ar, enum wmi_bss_chan_info_req_type type); int ath11k_wmi_send_stats_request_cmd(struct ath11k *ar, struct stats_request_params *param); +int ath11k_wmi_send_pdev_temperature_cmd(struct ath11k *ar); int ath11k_wmi_send_peer_flush_tids_cmd(struct ath11k *ar, u8 peer_addr[ETH_ALEN], struct peer_flush_params *param);